Is this just how I perceive myself?

When school was still in session, people would talk to me and tell me stuff, but I always thought they were just doing it to make fun of me.(kind of like how people talk to "losers" but make fun of them without their knowing so) People still hang out with me during summer, without my asking so, but I don't believe they really want to. I've come to realize that I am an annoying person. I find my personality, voice, looks, mentality, my appearance,even, annoying or just plain horrible. Is this just in my head, that people are "out to get me" or is it possible that they genuinely are my friends? If so, how can I stop thinking this way?